Precipitation overrides warming in mediating soil nitrogen pools in an alpine grassland ecosystem on the Tibetan Plateau

doi:10.1038/srep31438

	Precipitation overrides warming in mediating soil nitrogen pools in an alpine grassland ecosystem on the Tibetan Plateau
	Lin, Li ; Zhu, Biao ; Chen, Chengrong 2; Zhang, Zhenhua ; Wang, Qi-Bing ; He, Jin-Sheng
	2016
发表期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
卷号	6
摘要	Soils in the alpine grassland store a large amount of nitrogen (N) due to slow decomposition. However, the decomposition could be affected by climate change, which has profound impacts on soil N cycling. We investigated the changes of soil total N and five labile N stocks in the topsoil, the subsoil and the entire soil profile in response to three years of experimental warming and altered precipitation in a Tibetan alpine grassland. We found that warming significantly increased soil nitrate N stock and decreased microbial biomass N (MBN) stock. Increased precipitation reduced nitrate N, dissolved organic N and amino acid N stocks, but increased MBN stock in the topsoil. No change in soil total N was detected under warming and altered precipitation regimes. Redundancy analysis further revealed that soil moisture (26.3%) overrode soil temperature (10.4%) in explaining the variations of soil N stocks across the treatments. Our results suggest that precipitation exerted stronger influence than warming on soil N pools in this mesic and high-elevation grassland ecosystem. This indicates that the projected rise in future precipitation may lead to a significant loss of dissolved soil N pools by stimulating the biogeochemical processes in this alpine grassland.
学科领域	Multidisciplinary Sciences
DOI	10.1038/srep31438
收录类别	SCI
语种	英语
WOS关键词	MICROBIAL BIOMASS ; ORGANIC NITROGEN ; CLIMATE-CHANGE ; PLANT-GROWTH ; AMINO-ACIDS ; SHORT-TERM ; LAND-USE ; CARBON ; RESPONSES ; WATER
WOS研究方向	Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号	WOS:000392117700001
出版者	NATURE PORTFOLIO
文献子类	Article
出版地	BERLIN
资助机构	National Program on Key Basic Research Project of the Ministry of Science and Technology of the People's Republic of China [2014CB954003, 2014CB954004]
作者邮箱	qwang@ibcas.ac.cn ; jshe@pku.edu.cn
作品OA属性	Green Published, gold
引用统计	被引频次：30[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/25389
专题	中科院植物分子生理学重点实验室
作者单位	1.Peking Univ, Dept Ecol, Coll Urban & Environm Sci, Beijing 100871, Peoples R China 2.Peking Univ, Key Lab Earth Surface Proc, Minist Educ, Beijing 100871, Peoples R China 3.Griffith Univ, Environm Futures Res Inst, Griffith Sch Environm, Nathan, Qld 4111, Australia 4.Chinese Acad Sci, Northwest Inst Plateau Biol, Key Lab Adaptat & Evolut Plateau Biota, 23 Xinning Rd, Xining 810008, Peoples R China 5.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
推荐引用方式 GB/T 7714	Lin, Li,Zhu, Biao,Chen, Chengrong,et al. Precipitation overrides warming in mediating soil nitrogen pools in an alpine grassland ecosystem on the Tibetan Plateau[J]. SCIENTIFIC REPORTS,2016,6.
APA	Lin, Li,Zhu, Biao,Chen, Chengrong,Zhang, Zhenhua,Wang, Qi-Bing,&He, Jin-Sheng.(2016).Precipitation overrides warming in mediating soil nitrogen pools in an alpine grassland ecosystem on the Tibetan Plateau.SCIENTIFIC REPORTS,6.
MLA	Lin, Li,et al."Precipitation overrides warming in mediating soil nitrogen pools in an alpine grassland ecosystem on the Tibetan Plateau".SCIENTIFIC REPORTS 6(2016).

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